Mechanical movement



June 1, 1937. Q HKE 2,082,256

MECHANI CAL MOVEMENT Filed April 13, 1935 INVENTOR.

Oscar /7. /Ye fsc'hke ATTORNEY Patented June 1, 1937 2 2 255;

UNITED STATES PATENT OFFICE Y 2,0s2,25e R P MECHANICAL MofiEMENT Oscar A. Netschke. St. Clair Shores, Mich. Application April 13 1935, serial-N6. 16,119

1 Claim. (01. 724-133)? This invention relates to rotary tooth brushes housing and at the upper end is connected by and the object of the invention is to provide a means of a link l2 to the pin l3 on the gear segrotary tooth brush including a handle and trigment 3. By this arrangement, movement of the ger whereby operation of the trigger will rotate trigger will move the gear segment.

the brush. The gear segment 3 meshes with a pinion I4 5 Another object of the invention is to provide a of the shaft I5 and a gear i6 is secured to this rotary tooth brush including a sheet metal memshaft 15 as shown in Figs. 1, 2 and 6. The gear ber shaped to fit the hand and having a trigger IE5 meshes with a pinion I! on the shaft l8 and extending therefrom, the trigger being Connected a small fly-wheel I9 is also secured to this shaft.

10 through gearing t0 the bru h w eby the brush The shaft l8, as shown in Fig. 2, extends through 10 y b rotated t a fairly high rate of pe by the housing and a brush support 20 in the form pe a o t t ig e of a tube is pressed onto the outer end of the Another object of the invention is to provide a haft is, as shown in Fig. 3. The rotary brush rotary tooth brush in which the brush is rotated 2|, shown in Fig, 2, is provided with a wire core y in One direction y Pulling the trigger, the 22 and the end 23 of this wire core 22 is bent l5 a in b ing so arranged as to disc nnect the at a right angle as shown in Fig.3 and fits in a d v p return movement 0f the triggerslot 24 cut into the outer threaded end of the A further object of the invention is to provide upporting member 20, as Shown in Figs, 3 a d 4.

a mp a d novel means whereby the brush The nut 25 which has been previously slipped h be removed replaced and locked in Posi' over the end 23 and portion 22 of the brush is 20 tion. then threaded onto the threaded end of the These objects and the several novel features Support member 29 and bindingly engages the of the invention are hereinafter more fully deend 23 in the bottom f the Slot thus ecuring scribed and claimed and the preferred form of the brush in place and preventing the brush construction by which these objects are attained from rotating in relation to the member 25 is .Shmlm in the ammpanying drawing in As will be noted in Figs. 5 and e, the shaft 15 t of the gear l6 rides in a slot 26 in the plate 8 Fig. 1 1s a view of the rotary tooth brush mechand housing There are Slots provided in the i i the housmg Y removed' housing for both ends or this shaft 15 and when 30 2 Is an enlarged sectlon taken on hne 2-4 the trigger 9 is pulled back in the position shown 30 of in Fig. 1 the gear segment is pulled forward and Fig. 3 is an enlarged section taken on line 3-3 pushes the gear '6 mm m esh with the pinion of Fig. 2. n

so that on this stroke of the trigger the brush g an enlarged Sectlon taken on hne 4 4 is rotated in one direction. Upon the release r I or return stroke of the trigger shown in Fig. 6, 0 g an enlarged sectlon taken on lme 5 5 the gear segment 3 is moved in a clockwise direction thus pushing the shaft l5 to the opposite g f j g g luustra'tmg the return Stroke of end of the slot 26 and bringing the gear l6 out 40 As shown in Figs. 1, 2 and 6 a housing 1 is proof mesh wlth the Pmlon p again pull- 40 ing the trigger, the gear I6 is again moved in mesh with the pinion I1 and thus by continuously pulling and releasing the trigger the brush vided which encloses the rotating mechanism. This housing I ispreferably made in two parts so as to allow ready assembly of the mechanism within the housing. A gear segment 3 is promay be rotated at hlgh rate of Speed- 5 vided which is pivotally mounted on the pivot to the the h 1s kept 4 in the housing and a Spring 5 connect-,5 the tation when it meets the resistance of brushmg end 1 of the gear segment 3 with the lug e in the and dunng retlim movement of the tngeer housing in order to pull the gear segment, over til power is again applied upon the next stroke against the stop portion 29 of the housing I, the 0f the trigger- The housing y be eed y held end 1 being shaped t fit t portion of the inthe hand to allow operation of the trigger and housing. A supporting plate 8 is provid d for the brush may be moved into the mouth to brush the gearing mechanism as 111 b d t d the surface of the teeth. It will be noted that from Figs. 1, 2, 5 and 6 and a trigger 9 is pivthe brush axis will be held horizontally and conotally mounted on the pivot II] in the housingseqllently the u a 0 t e tee h will be This trigger 9 extends through the slot II in the brushed vertically and the handle may be re- 55 versed in position to allow use of the brush on one side or the other of the mouth.

From the foregoing description it becomes evident that the device is very simple and eflicient in operation, provides a handy compact device for rotating the brush and provides a device which accomplishes the objects described.

Having thus fully described my invention, its utility and mode of operation, what I claim and desire to secure by Letters Patent of the United States is In a rotary tooth brush mechanism, a housing formed to provide a head and a handle extending at an angle to the head, the housing being formed to provide an indented portion between the handle and the head, a gear segment pivotally mounted in the head and having an extension arranged to seat on said indented portion, a coiled spring connected to the extension and extending into the handle, the handle being provided with a lug and the spring being connected to the lug and to the extension to normally hold the extension on the housing indentation, a trigger pivotally mounted in the head, a link pivotally connected to the trigger and to the gear segment whereby the gear segment may be turned by turning movement of the trigger, a shaft rotatably mounted in the head and extending therefrom, a fly-wheel secured to said shaft within the housing, a gear reduction mechanism between the shaft and the gear segment, the axis of one of the gears being movable and the arrangement being such that movement of the gear segment in one direction moves the movable gear to position to rotate the shaft and movement of the gear segment in the opposite direction disengages the movable gear from the shaft.

OSCAR A. NETSCHKE. 

